Remanent magnetisation and demagnetisation measurements on particulate recording media

Author

Bissell, P.R. ; Chantrell, R.W. ; Tomka, G. ; Knowles, J.E. ; Sharrock, M.P.

Author_Institution

Sch. of Phys. & Astron., Lancashire Polytech., Preston, UK

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3650

Lastpage

3652

Abstract

The static and dynamic remanence curves of particulate media were studied experimentally in order to clarify the effect of interparticle interactions. The technique is based on a comparison of the remanence curves using as a guide relations derived by consideration of the switching field distribution. Measurements were made using a vibrating-sample magnetometer on samples of tape containing γ-Fe ₂O₃ particles. The results show a strong dependence of magnetization reversal on the magnetic state, which is consistent with the effects of interactions

Keywords

iron compounds; magnetic properties of fine particles; magnetic recording; magnetisation; magnetometers; remanence; Fe₂O₃; demagnetisation; interparticle interactions; magnetisation; magnetization reversal; particulate recording media; remanence curves; switching field distribution; vibrating-sample magnetometer; Demagnetization; Electromagnetic measurements; Extraterrestrial measurements; Isothermal processes; Magnetic field measurement; Magnetic recording; Magnetization reversal; Particle measurements; Remanence; Saturation magnetization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42389

Filename

42389